The main reasons for the death of blood parrot cichlids after water change include the following:
Water quality differences: Blood parrot cichlids have relatively high requirements for water quality. If the amount of water changed is too large or the difference between the new water and the old water is too significant, it may lead to unstable water quality, the growth of bacteria and pathogens, thus affecting the health of blood parrot cichlids.
Lack of oxygen: Blood parrot cichlids have a relatively weak respiratory system and a high demand for oxygen. If there is insufficient oxygen during the water - changing process, or if the air pump in the fish tank fails to replenish oxygen in a timely manner, blood parrot cichlids may die from lack of oxygen.
Water temperature differences: Drastic changes in water temperature can cause a stress response in blood parrot cichlids, affecting their physiological functions, and in severe cases, it may lead to death.
Improper treatment of new water: If the new water has not been left to stand in advance to remove chlorine, or if the water contains substances harmful to blood parrot cichlids, it can also cause the death of blood parrot cichlids after water change.
Preventive and treatment measures:
Properly expose water to sunlight: When using tap water as new water, it should be left to stand in the sun for 3 - 4 days in advance to remove chlorine, and ensure that the water quality meets the requirements for raising blood parrot cichlids.
Change water regularly: Don't change the water for blood parrot cichlids every day, nor should you go for a long time without changing the water. Generally, it is recommended to change the water every four days or once a week, and each time the amount of water changed should be 1/3 to 1/5 of the water in the fish tank.
Control water temperature: Pay attention to controlling the water temperature when changing water to avoid a large temperature difference. You can adjust the temperature of the new water to be close to that of the water in the fish tank before changing the water.
Install an air pump: To ensure sufficient oxygen in the water, you can install an air pump or a small water pump in the fish tank to maintain sufficient oxygen in the water.
Observe the fish's condition: After changing the water, closely observe the condition of the blood parrot cichlids, including their feeding situation and color changes. If any abnormalities are found, take timely measures.